package com.itheima.service.impl;

import com.itheima.service.UserService;

public class UserServiceImpl implements UserService {
    public void add() {
        System.out.println("执行 add......");
        int num = 10/0;
    }

    public void delete() {
        System.out.println("执行 delete......");
    }

    public void update() {
        System.out.println("执行 update......");
    }

    public void select() {
        System.out.println("执行 select......");
    }
}
